Python Dash examples with scattergeo

Dash Python
1

Hi,
I want to build an interactive map…
So, I need python Dash examples with scattergeo.
or
How can I do that?

regards

2

Here is an example from the docs: https://plot.ly/python/scatter-plots-on-maps/

import dash
import dash_core_components as dcc
import dash_html_components as html
import pandas as pd

df = pd.read_csv('https://raw.githubusercontent.com/plotly/datasets/master/2011_february_us_airport_traffic.csv')
df.head()

df['text'] = df['airport'] + '' + df['city'] + ', ' + df['state'] + '' + 'Arrivals: ' + df['cnt'].astype(str)

scl = [ [0,"rgb(5, 10, 172)"],[0.35,"rgb(40, 60, 190)"],[0.5,"rgb(70, 100, 245)"],\
    [0.6,"rgb(90, 120, 245)"],[0.7,"rgb(106, 137, 247)"],[1,"rgb(220, 220, 220)"] ]

data = [ dict(
        type = 'scattergeo',
        locationmode = 'USA-states',
        lon = df['long'],
        lat = df['lat'],
        text = df['text'],
        mode = 'markers',
        marker = dict(
            size = 8,
            opacity = 0.8,
            reversescale = True,
            autocolorscale = False,
            symbol = 'square',
            line = dict(
                width=1,
                color='rgba(102, 102, 102)'
            ),
            colorscale = scl,
            cmin = 0,
            color = df['cnt'],
            cmax = df['cnt'].max(),
            colorbar=dict(
                title="Incoming flightsFebruary 2011"
            )
        ))]

layout = dict(
        title = 'Most trafficked US airports<br>(Hover for airport names)',
        colorbar = True,
        geo = dict(
            scope='usa',
            projection=dict( type='albers usa' ),
            showland = True,
            landcolor = "rgb(250, 250, 250)",
            subunitcolor = "rgb(217, 217, 217)",
            countrycolor = "rgb(217, 217, 217)",
            countrywidth = 0.5,
            subunitwidth = 0.5
        ),
    )

fig = dict( data=data, layout=layout )    

app.layout  = html.Div([
    dcc.Graph(id='graph', figure=fig)
])

if __name__ == '__main__':
    app.run_server(debug=True)
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3

Thank you,

What if the map data came from selected data of a scatter graph?
I mean when the map data is produced from another plotly dash graph dynamically selected data.
The map will be output of selected data of another plotly dash figure.
I produced pandas dataframe from first plotly dash graph dynamically as selected data.

But I could not combine this data to plotly-dash-map.
How can I make the map as output of plotly dash?

regards

4

Start by following the examples here: Part 3. Interactive Graphing and Crossfiltering | Dash for Python Documentation | Plotly. In particular, set a Input to be the the selectedData property of the first graph.

1 Like